{ INFORMATICS.MCCME.RU
  Problem statement: http://informatics.mccme.ru/moodle/mod/statements/view3.php?chapterid=258
  Verdict: Accepted
}
uses SysUtils, Math;
 
var
	a,b,c,d:longint;
	s:string;
 
begin
reset(input,'input.txt');
rewrite(output,'output.txt');
read(a,b,c);
if c>a*b then write('NO') else
if (c mod a=0) or (c mod b=0) then write('YES') else write('NO');
end.
 